Expansion-bolt.



H. W. ,MOWBIL EXPANSION BOLT.

APPLICATION FILED 1`IOV.14,v1908.

927,064. y Patented July 6, 1909.

va/Z ZZ/llovei:

to move radially outward to engage the wall of the bore throughout theirentire outer surface, unhindered by any connection with means to preventtheir endwise movement.

Having thus described my invention, I claim:

l, ln an expansion bolt, the combination with a bolt, a nut, and anexpandible sleeve member engaged bythe nut, of a frame membei' havingone end portion engaged by the Vend ot' the boit, 4and having its other`endV with a'bo'lt, of a nut, a sectional sleeve mem bera frame comrising van end portion engaging the end of t 1e bolt, a portion engagingthe outer end of the sleeve member, and a connecting portion betweensaid two portions of the trame located between'the sleeve sections, tienut having longitudinal channels in ite outer side in which are locatedthe connecting portions of the frame member.

hln an expansion bolt, the combination with a bolt, of a nut member, asectional sleeve member, and a frame member comprising an end portionengagingV the end -of the bolt, a ring portion slidable on the bolt andengaging the outer end of the sleeve sections, and portions connectingsaid ring portion and said end portion.

5. In an expansion bolt, the combination with a bolt, of a nut member, asectional sleeve mem-ber, anda frame member cornprifiing an end portionengaging the end of with the bolt, Aof a nut .member having externalgrooves, sectional sleeve member, and a frame member ctnnprising an endportion adapted to'engage the end ol the bolt, a ring portion slidableon. the bolt and engaging the outer end oi the sleeve sections, andportions connecting said ring and said end portion and located betweenthe sleeve sections, the connecting portions of the frame member beinglocated in the grooves of the nut member.

7. In an expansion bolt, the combination with a bolt, a nut, and anexpandible sleeve member engaged by the nut, of a frame member havingone end portion engaging the end of the bolt, and having its other endportion engaging the sleeve member to prevent rearward movement of thesleeve relative to the bolt.

8. In an expansion bolt, the combination with a bolt, of a mit, asectional sleeve memrber, a frame comprising an end portion en.-

gaging the end oi'ntlie bolt, a portion engagn mg the sleeve member, toprevent endwise movement thereof', and a connectm b portion between saidtwo portions or thejrame located between 'the sleeve sections.

9` A device of the character described, comprising a pair ofcomparatively narrow bars of substantially uniform width extendingparallel and connected at one end by a transverse abutment portion forengagement withy the end of a bolt, each of the bars having at its otherend a transverse portion with a flattened face extendingcircumferentially. HERBERT W'. MOWER. Witnesses:

Winnaar li. v C. A.

